fix build macos

client/README.md

@@ -16,4 +16,18 @@ to this in your browser, and you can call your Go code from devtools.
 
 ## Building
 
-To build a redistributable, production mode package, use `wails build`.
+### Windows
+To build for Windows:
+- Run `wails build` (or `wails build -platform windows/amd64`)
+- Or use the PowerShell build script: `./build.ps1`
+
+### macOS (ARM & Intel)
+To build for macOS:
+- To build Apple Silicon (ARM64) target: `wails build -platform darwin/arm64`
+- To build Intel (AMD64) target: `wails build -platform darwin/amd64`
+- To build a Universal macOS binary: `wails build -platform darwin/universal`
+- Alternatively, run the helper script to build both ARM64 and AMD64 targets:
+  ```bash
+  chmod +x build.sh
+  ./build.sh
+  ```